The young spies are called upon to investigate when they hear that the normally peace-loving Prime M...

The Grand Master, leader of the Secret Kriminal Underground League (S.K.U.L.) threatens to freeze th...

When zombies start ransacking music stores, MI9 suspects that a boy band named Crush is responsible,...

Everyone is in the dark as freak power outages sweep Britain.

When a hacker called The Worm takes control of Britain's space defence system and leaves the country...

When a teen working for the CIA joins the team, Blane's jealousy causes him to take a crazy risk.

A wannabe SKUL member, after overhearing an MI9 meeting, thinks that St. Hope's teachers are the age...

A former beautician's youth potion ends up turning the school's teens into toddlers.

When a teen scientist invents a method of disarming missiles that could make the army obsolete, he i...

The teen spies defy their superiors to help an extraterrestrial fugitive.

At an award ceremony for M.I. 9, the world's greatest illusionist makes the President of the United...

A bumbling inventor's Artificial Intelligence unit tries too hard to enforce the school rules.

When a fashion designer's green logo mysteriously begins appearing on kids' skin, Daisy and Rose go...

Britain's young people are laid low by a strange sleeping sickness.

The team investigates when their schoolmate Lenny becomes the latest one arrested in a new wave of i...

The high school spies become concerned when a Member of Parliament proposes sending misbehaving Brit...

A new Cold War is in the making, but this time it's the Grandmaster's plan to give everyone the flu.

It's Daisy's worst nightmare when a plague of head lice hits the school, and turns the kids into mas...

The high school spies are amazed to discover that they have competition -- there is another team of...

The world's most famous diamonds are being stolen, and the team suspects the captain of the all-Engl...

A new invisible spy plane is stolen by a mysterious unknown pilot.

Plants rise up and attack anti-green targets, so Blane goes into action.

The government is powerless to stop an asteroid that is hurtling through space toward the Earth. Loo...

A different boss, Frank London, takes over the helm of the MI-9 team. At first, Rose is mistrustful...

A mysterious thief is tunneling into banks all over England. How can the spies figure out where he w...

When Oscar's identity as a spy is revealed on the Internet, Rose and Carrie suspect that he is hidin...

When students at St. Hope's start turning into Japanese fighting fish, the team suspect that someone...

An old enemy of Frank's breaks out of jail and with his gang comes to steal Frank's invention, the D...

The children at St.Hopes are getting fatter and fatter. They are adicted to Wursts. the team must st...

MI9 get a chance to catch the Grand Master, but the team's new gadgets are intercepted. But a danger...

Rose has been selected for the National Academy of Brilliance! This is an opportunity like no other...

Katrina Houseman has arrived at MI High. She has been working on a top secret project: N80, a real l...

The country's power is disappearing at a rapid rate. The best brains in the UK convene to decide a p...

Carrie is set her most difficult mission yet. She has to exploit her friendship with fellow gymnast...

The spies put Flopsy up for ransom in exchange for Oscar's Mum. Surely, the Grand Master won't be ab...

A SKUL space probe has landed on the moon. MI9 suspects SKUL are using it to spy on the world. The s...

The spies have a vital mission - they must protect a ship carrying the last component required to ma...

The old M.I. High team have graduated and spy handler, Frank London, is on the lookout for a new bun...

Tempers flare and loyalties are tested when a series of embarrassing incidents threaten to bring dow...

A mysterious fireball crashes in the woods near St. Heart's. Believing it to be a U.F.O., curious st...

Shunned by the pop world for not having superstar looks, embittered music mogul Cuthbert Peabody hij...

The team are given their first international assignment in the rogue state of Boldovia where the loc...

On a campaign to get kids eating more healthily and concentrate at school, St. Heart's is chosen by...

Out of sync with the times, an old-school spy infiltrates the St. Heart's spybase and hijacks an M.I...

Funded by KORPS, scientific genius Bobby Bleach has brought the country to its knees by releasing a...

Top secret scientific components are being stolen by a thief dressed as a character from a best-sell...

After being haunted by memories of a terrible decision which cost the lives of his entire team in th...

Sent to Uttland on the pretense of being on a school trip, the team must break into the country's de...

Briefed to protect Grand Duke Nicholas, the heir to the throne of a small European state who has had...

Pieces of the jigsaw puzzle begin to fall into place when the team finally discover the grand scheme...

It is a new term at St. Heart's and with Zoe still away, spy handler Frank tasks the team with the m...

Keri's first mission as a fully-fledged M.I.9 agent comes sooner than anyone expected when the team...

The team are sent to investigate Derren Beige, a flamboyant clairvoyant whose previously pathetic pr...

When government food advisor George Monoblot is sacked after highlighting the dangers of a revolutio...

During a successful M.I.9 mission to secure the deadly assassin Samantha Stiletto, KORPS mistakes Ke...

After learning that KORPS have a weapon of mass destruction, the team travels back to the 1940s to l...

Tom discovers the online Dark Wizard avatar from Blade Quest has become self-aware.

Dan joins a free running group that has been accused of committing crimes. Stella goes undercover on...

Frank is asked to join a secret order within M.I.9 called the League of Mata Hari. However, the curi...

M.I.9 have acquired a fragmented message from the terror organisation 99p. They are a group that is...

Mandy Pluckley, the country's top 'agony aunt', has been abducted by KORPS. She is the sworn confida...

The MI High team have set up their own agency after being fired from M.I.9. After many unsatisfying...

The team, Frank, and Stella have gone into hiding as M.I.9 has been taken over by KORPS. As KORPS' p...